
A: Common causes include excessive dyeing or perming, UV exposure, and lack of moisturizing.
As we all know, it can be improved by using hair oil or repairing conditioner.
In fact, hair damage is not just what you generally know. The most common and overlooked reason is the temperature problem of the hair dryer.
Common hair dryers do not have a constant temperature function, so the longer you blow, the higher the temperature becomes, causing your hair to be excessively damaged when blow-drying every day.
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